WO2011073550A1 - Séparateur à écoulement cyclonique - Google Patents
Séparateur à écoulement cyclonique Download PDFInfo
- Publication number
- WO2011073550A1 WO2011073550A1 PCT/FR2010/052638 FR2010052638W WO2011073550A1 WO 2011073550 A1 WO2011073550 A1 WO 2011073550A1 FR 2010052638 W FR2010052638 W FR 2010052638W WO 2011073550 A1 WO2011073550 A1 WO 2011073550A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channel
- fluid component
- outlet
- axis
- fluid
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0217—Separation of non-miscible liquids by centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
Definitions
- the invention generally relates to a cyclonic flow separator for separating components from a fluid medium.
- a non-exclusive application of such a separator is in the production of petroleum oil.
- the separator is placed for example in a petroleum well. It receives a fluid comprising water and oil from a producer tank and extracts a reduced water content oil. The water separated from the extracted oil is re-injected into a reservoir level, which may be different from the producing reservoir, without having to be separated or treated in a surface installation.
- An alternative is to separate the fluids in the well and bring them up to the surface.
- the cyclonic flow regime in a component separation chamber of a fluid is particularly effective for the mass separation of components.
- the heavier components are recovered at a radial position farther from the center than the lighter components.
- the tangential velocity of the particles of the fluid medium increases according to a hyperbolic law from the periphery of the chamber to a radius where it reaches a maximum value, then decreases between this radius and the center of the chamber according to a linear law. In particular, it is zero in the center of the separation chamber. This subjects the particles of the fluid medium to radial accelerations inversely proportional to the cube of the radius in the hyperbolic zone.
- FR-A-2,592,324 and FR-A-2,919,206 describe separators for heterogeneous liquid having a cylindrical separation chamber and an axial launcher which rotate integrally about their common axis.
- the launcher has a core around which guide channels bring a fluid medium into the chamber to generate a cyclonic flow.
- the object of the present invention is to improve rotary-type cyclonic flow separators.
- it is sought to evacuate the solid particles from the fluid medium in the separation chamber.
- a mobile assembly comprising at least one launcher and a cylindrical separation chamber having an inner wall, said movable assembly being rotated about said axis in order to drive the fluid medium in a substantially axial flow and cause the components to separate from said fluid medium, and
- an outlet device at a downstream end of the separation chamber comprising at least a first outlet for extracting a first fluid component and a second outlet for extracting a second fluid component that is less dense than the first fluid component, said first outlet being further away of the axis as the second exit.
- the output device includes a third output for extracting a third fluid component having solid particles.
- the third fluid component is denser than the first fluid component, and the third output is further from the axis than the first output with at least one edge near the inner wall of the separation chamber.
- the solid particles of the fluid medium form a small layer on the inner wall of the separation chamber and advance longitudinally on this wall in the direction of the flow of fluid towards the downstream end of the separation chamber, then are evacuated by the third exit.
- they do not accumulate or little, the operation of the cyclonic flow separator is not disturbed and the separation chamber has less wear.
- the separator comprises a bypass channel connecting in the output device, the third output with the second output so that the third fluid component flows to the second fluid component.
- the separator further comprises a fixed outer envelope and first, second and third channels each in an extension of the first, second and third output, respectively, for conveying each fluid component, and wherein said third channel is part of a external insert rotated about the axis with the movable assembly and opens into a fixed cavity of the outer casing;
- - Sealing means are sealing between the outer shell and the outer insert including the third channel;
- the sealing means comprise a sealing grain applied in abutment against one or the other of the outer insert and the outer casing, by at least one elastic element;
- the outer insert and the outer envelope are axially separated by a clearance forming a leakage channel between the first outlet channel and the cavity;
- the leakage channel extends in a cylindrical portion substantially parallel to the axis comprising a plurality of radial restrictions for adjusting a pressure drop of said leakage channel;
- the third channel comprises at least a first diaphragm adapted so that a pressure of the third fluid component in said cavity is less than or equal to a pressure of the first fluid component in the first channel;
- bypass channel extends between the cavity and the second channel, so that the third fluid component flows to the second fluid component
- the bypass channel comprises a second diaphragm adapted so that a pressure of the third fluid component in said cavity is greater than or equal to a pressure of the second fluid component in the second channel;
- the third channel is divided into a plurality of subchannels between the third outlet of the separation chamber and the first diaphragm;
- the outlet device forms a bottom to the separation chamber substantially transverse to the axis, comprising an annular projection extending upstream of the fluid flow in the separation chamber, said projection being located between the first outlet and the third output in such a way as to channel the particles solids of the third fluid component to said third output.
- FIG. 1 is a schematic diagram in longitudinal section of a component separator of a fluid medium
- FIG. 2 is an enlarged view in longitudinal section of the output device of the separator of FIG. 1;
- FIG. 3A is a longitudinal sectional view of the output device of a first embodiment of the invention.
- FIG. 3B is a cross-sectional view of the device of FIG. 3A along section line IIIB;
- FIG. 4 is a view of the output device of a second embodiment of the invention.
- FIG. 5 is a view of the output device of a third embodiment of the invention.
- FIG. 6 is a view of the output device of a fourth embodiment of the invention.
- FIG. 7A is a view of the output device of a fifth embodiment of the invention.
- Figure 7B is an enlarged view of a portion of Figure 7A;
- FIG. 8 is a sectional view developed in a plane manner of an example of a third output of an output device of the invention.
- FIG. 1 presents a general view in axial section of an embodiment of a separator with cyclonic flow.
- This example of separator 1 comprises a fixed outer casing 5 of generally cylindrical shape of axis 6, comprising an inlet E of a fluid medium to be separated, a fluid outlet SI and a fluid outlet S2.
- a cylindrical separation chamber 3 and a coaxial launcher 2 are mounted coaxially with the casing 5 and pivotable about the axis 6.
- the chamber 3 and the launcher 2 belong to an assembly 11 pivotally mounted in the outer casing 5 on bearings 12.
- the number and position of the bearings in FIG. 1 may vary.
- Dynamic seals 13 make it possible to seal between the moving assembly 11 and the fixed outer casing 5.
- the mobile assembly 11 is rotated by a belt 14 driven itself by a motor 4.
- the inlet E at an upstream end of the separator 1, is fed by an axial connection 10 with a flow rate under pressure of a fluid medium to be separated, such as a water-oil emulsion.
- the output S1 is produced here by a lateral connection 8 on the outer casing 5 of the separator 1. This output S1 makes it possible to evacuate a first fluid component of relatively high density captured at the outlet of the separation chamber 3, that is, ie opposite the launcher 2, away from the axis 6.
- the output S2 is produced here by a tube 7 centered on the axis 6 and communicating with the interior of the separation chamber 3. This output S2 makes it possible to evacuate a second fluid component of lower density than the first component.
- the first fluid component is water (having a residual oil content much lower than the oil content of the emulsion introduced at the inlet E), and the second fluid component of the oil (having a residual water content much lower than the water content of the emulsion introduced at the inlet E) .
- the fluid medium (water-oil) enters the moving assembly 11 by its upstream end, opens into an upstream chamber 15, passes through the launcher 2 which converts the translational movement of the fluid into a rotational movement of axis 6 and rotation speed identical to that of the assembly 11, and is injected at the periphery of the separation chamber 3 with a tangential speed substantially equal to that of the inner wall 3a of the separation chamber 3.
- the tangential velocity of the fluid in the chamber 3 changes substantially inversely proportional to the radius, increasing very strongly when approaching the center, that is to say of the axis 6. This leads to accelerations favorable to the separation of the fluids, and in particular to concentrate the second fluid component, of lower density than the first fluid component, towards the center of the separation chamber 3 during the flow.
- the first relatively dense fluid component (water) is then discharged from the separation chamber 3 by a first annular outlet 21 to the downstream end of the chamber 3, which communicates with the output SI of the separator via a first annular channel 31.
- Figure 2 which is an enlarged view of the right part of Figure 1.
- the water thus discharged the residual oil content may be very low, is re-injected into a reservoir level which may be different from that from which the emulsified mixture supplied to the inlet E of the separator originates.
- the second relatively sparse fluid component (oil) is extracted by a second outlet 22 of the separation chamber 3 consisting in this example of a circular inlet opening of the central tube 7.
- This tube 7 of the embodiment of FIGS. 2 is integral with the outer casing 5 of the separator, and does not rotate with the separation chamber 3, which simplifies the construction of the apparatus.
- the tube 7, the first and second outlets 21,22, the lateral 8 and axial connections 10 are an example of an outlet device 16 at a downstream end 3b of the separation chamber 3.
- outlets 16 of the separation chamber 3 are both ring-shaped and concentric with the axis of the chamber.
- Various arrangements are possible at the outlet of the cyclonic flow separation chamber 3.
- the outlets are concentric and the denser component (water) is discharged at the outlet farthest from the axis while the lighter component (oil) is extracted at the output closest to the axis.
- a gas outlet (least dense phase and most central outlet) may be provided in addition to the water and oil outlets.
- Figures 3A and 3B show enlarged views of a first embodiment of an output device 16 of the invention.
- the separation chamber 3 comprises a first annular outlet 21 and a second annular outlet 22 surrounded by the first outlet 21.
- the output device 16 further comprises:
- a central insert 17 extending in the direction of the axis 6 and comprising a substantially circular upstream face 17a centered on the axis 6,
- a substantially cylindrical intermediate insert 18 extending in the direction of the axis 6 around the central insert 17 and having an annular upstream face 18a surrounding the upstream face 17a, and
- the face 17a of the central insert 17 generates in the separation chamber 3, a dead zone in which the fluid medium does not move.
- This dead zone of fluid medium substantially cylindrical, extends from the face 17a towards the inside of the separation chamber 3.
- the upstream face 18a of the intermediate insert 18 has in this figure a small thickness in a radial direction perpendicular to the direction of the axis 6. It separates the first and second outputs (21, 22) of the separator, that is, that is, separates the flows of the first fluid component (water) and the second fluid component (oil) from the fluid medium.
- the upstream faces 17a, 18a and 19a of the output device 16 form the bottom of the separation chamber 3 at its downstream end 3b.
- the first, second and third outlets (21, 22, 23) are formed between these upstream faces of the output device 16.
- the central insert 17 is connected by parts not shown in the figures to the outer envelope 5 of the separator 1, so that it does not rotate or is not rotated with the mobile assembly 11.
- the intermediate insert 18 is also connected to the outer casing 5 of the separator 1, for example by radial bridges extending between the central insert 17 and the intermediate insert 18. It therefore does not rotate or is not rotated with the moving assembly 11.
- the outer insert 19 is connected to the moving assembly 11, for example by other radial bridges extending between the outer insert 19 and the moving assembly 11. It is therefore rotated about the axis 6 but still relative to the moving assembly 11.
- a substantially annular space between the central insert 17 and the intermediate insert 18 forms a second extraction channel 32 in the extension of the second outlet 22 of the separation chamber, for extracting the second fluid component (oil).
- a substantially annular space between the intermediate insert 18 and the outer insert 19 forms a first extraction channel 31 in the extension of the first outlet 21 of the separation chamber 3, for extracting the first fluid component (water).
- a substantially annular space between the outer insert 19 and the moving assembly 11 forms a third extraction channel 33 in the extension of the third outlet 23 of the separation chamber 3, to extract the third fluid component comprising solid particles ( sand).
- Said third outlet 23 has an outer edge 23a having a diameter substantially equal to the inner diameter of the inner wall 3a of the separation chamber 3.
- the solid particles of the third fluid component are thus rapidly discharged through the third outlet 23 of the outlet device 16. They do not accumulate in the separation chamber 3, do not disturb the cyclonic flow of this chamber and do not generate no wear of the output device 16.
- the output device 16 further comprises sealing means 40 between the fixed elements and the movable elements.
- sealing means 40 comprise in particular:
- sealing means 40 make it possible to avoid any leakage of the third fluid component comprising solid particles (sand) to the first fluid component (water), to be reinjected into the geological formation.
- Each sealing grain 41, 42 is annular and is applied against the movable member by a resilient member 41a, 42a, respectively, for example Belleville washer type, or coil spring.
- the third channel 33 thus extends from the third outlet 23 of the separation chamber 3 to the sealing means 40, through the moving assembly 11 and / or the external insert 19.
- This third channel 33 is therefore mobile in rotation with the assembly 11 about the axis 6. It then opens into a cavity 5a of the envelope 5, which is fixed.
- bypass channel 50 is, for example, made with at least one radial tube 51, passing through the outer insert 19, the first channel 31 and the intermediate insert 18, to open radially into the second channel 32.
- the third fluid component comprising solid particles (sand) is thus diverted towards the second fluid component (oil).
- tubes 51 may be arranged radially, in a star around the axis 6.
- FIG. 4 a second embodiment is presented, incorporating all the characteristics of the first embodiment of the output device 16, and in which the upstream face 19a is not a flat surface substantially perpendicular to the axis 6.
- This upstream face 19a comprises an annular projection 19b extending in direction of the interior of the separation chamber 3.
- FIG. 5 shows a third embodiment of the invention comprising a single sealing grain 42 adapted to provide a seal between the fixed outer casing 5 and the outer insert 19 rotatable about the axis 6.
- Simplified structure makes it possible to use a sealing grain of larger cross-section, more resistant to the significant relative speeds between the outer envelope 5 and the outer insert 19.
- FIG. 6 shows a fourth embodiment of the invention in which the sealing means of the previous embodiments are replaced by an axial clearance between the outer envelope 5 and the outer insert 19, said clearance forming a channel of leak 43 between the first channel 31 and the cavity 5a.
- the sealing grains 41, 42 must be sized to withstand the relative speeds and natures of the fluid components, which is not easy for the oil application.
- the output device 16 of this embodiment (but the other embodiments may also have this feature) comprises a first diaphragm 34 at the outlet of the third channel 33, that is to say at the inlet of the cavity 5a.
- a pressure of the third fluid component in the cavity 5a may be less than or equal to a pressure of the first fluid component in the first channel 31. In this way, it is ensured that in the escape channel 43 a weak quantity of the first fluid component (water) of the first channel 31 is diverted to the cavity 5a, and the third fluid component comprising solid particles (sand) does not pass through this leakage channel 43 to the first channel 31.
- the first component fluid is not polluted and the output device 16 no longer needs sealing grain or any sealing device by contact.
- the output device 16 of this embodiment also comprises a second diaphragm 52 at the input of the bypass channel formed by the tube 51, that is to say at the output of the cavity 5a.
- a pressure of the third fluid component in the cavity 5a may be greater than or equal to a pressure of the second fluid component in the second channel 32. In this way, it is ensured that the third fluid component is evacuated by the diversion channel to the second channel 32.
- the first and second diaphragms 34, 52 therefore make it possible to adjust the pressure in the cavity 5a, and therefore the flow rates at the inlet and the outlet of this chamber. It is thus possible to ensure that these flows are large enough so that the solid particles (sand) of the third fluid component do not accumulate and do not clog this cavity 5a.
- Figures 7A and 7B show a fifth mode of embodiment of the invention wherein the escape channel 43 of the fourth embodiment, here comprises an intermediate portion 43b of substantially cylindrical longitudinal shape about the axis 6 of the device, between an inlet portion 43a and an output portion 43c substantially annular and radial.
- the intermediate portion 43b optionally comprises a plurality of radially extending protuberances 43d extending transversely, forming radial restrictions in the escape channel 43 and adapted to control the flow rate of fluid passing through this escape channel 43.
- This intermediate portion 43b thus makes it possible to adjust the hydraulic pressure drop and the flow rate of the escape channel 43, without requiring a large radial space requirement and without imposing axial tolerances that are difficult to substantially maintain.
- FIG. 8 represents a planarly developed schematic view of an example of a substantially annular third channel 33 of the output device 16 of the invention.
- This third channel 33 comprises a plurality of sub-channels 33b separated by the bridges 19b connecting the outer insert 19 to the moving assembly 11. These subchannels have inputs of convergent shape to facilitate the flow, and prevent solid particles (sand) of the third fluid component do not accumulate or clog these inputs.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cyclones (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Saccharide Compounds (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112012014983A BR112012014983A2 (pt) | 2009-12-18 | 2010-12-07 | separador com escoamento ciclônico |
US13/516,179 US8950590B2 (en) | 2009-12-18 | 2010-12-07 | Cyclonic flow separator |
NO20120670A NO339749B1 (no) | 2009-12-18 | 2012-06-08 | Separator for komponenter i et fluidmedium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0959254 | 2009-12-18 | ||
FR0959254A FR2954187B1 (fr) | 2009-12-18 | 2009-12-18 | Separateur a ecoulement cyclonique. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011073550A1 true WO2011073550A1 (fr) | 2011-06-23 |
Family
ID=42314835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2010/052638 WO2011073550A1 (fr) | 2009-12-18 | 2010-12-07 | Séparateur à écoulement cyclonique |
Country Status (5)
Country | Link |
---|---|
US (1) | US8950590B2 (fr) |
BR (1) | BR112012014983A2 (fr) |
FR (1) | FR2954187B1 (fr) |
NO (1) | NO339749B1 (fr) |
WO (1) | WO2011073550A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120248035A1 (en) * | 2009-12-18 | 2012-10-04 | Total Sa | Cyclonic flow separator |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2966145B1 (fr) | 2010-10-14 | 2016-12-30 | Total Sa | Traitement de l'eau dans au moins une unite de filtration membranaire pour la recuperation assistee d'hydrocarbures |
FR2966144B1 (fr) | 2010-10-14 | 2013-04-12 | Total Sa | Traitement de l'eau dans au moins une unite de filtration membranaire pour la recuperation assistee d'hydrocarbures |
US9833795B2 (en) | 2013-06-21 | 2017-12-05 | The United States Of America, As Represented By The Secretary Of The Navy | Cascaded axial fluid separator methods and systems |
WO2014205382A1 (fr) * | 2013-06-21 | 2014-12-24 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Procédé et appareil pour séparation de composants de flottabilité différente mélangés en un fluide d'écoulement |
US10189029B2 (en) * | 2016-06-30 | 2019-01-29 | United Arab Emirates University | Magnetic particle separator |
US20190184313A1 (en) * | 2017-12-15 | 2019-06-20 | Minextech Llc | Method and apparatus for separating insoluble liquids of different densities |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1373743A (en) * | 1920-09-04 | 1921-04-05 | Sharples Specialty Co | Method and mechanism for centrifugally separating substances |
US3904109A (en) * | 1973-12-14 | 1975-09-09 | Gene E Underwood | Multiple density separator |
US4443331A (en) * | 1980-03-21 | 1984-04-17 | Centre Technique De L'industries Des Papiers Carton Et Celluloses | Process and device for separating particles in a fluid especially for the cleaning of the suspensions handled in the paper industry |
FR2592324A1 (fr) | 1986-01-02 | 1987-07-03 | Total Petroles | Separateur tournant a vortex pour liquide heterogene. |
US5131544A (en) * | 1988-09-13 | 1992-07-21 | E. Et M. Lamort | Device for selectively separating particles in a liquid, in particular for cleaning fibrous paper suspensing |
FR2919206A1 (fr) | 2007-07-27 | 2009-01-30 | Total Sa | Separateur a ecoulement cyclonique |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2247838C (fr) | 1998-09-25 | 2007-09-18 | Pancanadian Petroleum Limited | Systeme de fond de trou pour la separation petrole/eau et la separation des solides |
FR2954187B1 (fr) * | 2009-12-18 | 2014-08-01 | Total Sa | Separateur a ecoulement cyclonique. |
-
2009
- 2009-12-18 FR FR0959254A patent/FR2954187B1/fr not_active Expired - Fee Related
-
2010
- 2010-12-07 US US13/516,179 patent/US8950590B2/en not_active Expired - Fee Related
- 2010-12-07 BR BR112012014983A patent/BR112012014983A2/pt not_active Application Discontinuation
- 2010-12-07 WO PCT/FR2010/052638 patent/WO2011073550A1/fr active Application Filing
-
2012
- 2012-06-08 NO NO20120670A patent/NO339749B1/no not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1373743A (en) * | 1920-09-04 | 1921-04-05 | Sharples Specialty Co | Method and mechanism for centrifugally separating substances |
US3904109A (en) * | 1973-12-14 | 1975-09-09 | Gene E Underwood | Multiple density separator |
US4443331A (en) * | 1980-03-21 | 1984-04-17 | Centre Technique De L'industries Des Papiers Carton Et Celluloses | Process and device for separating particles in a fluid especially for the cleaning of the suspensions handled in the paper industry |
FR2592324A1 (fr) | 1986-01-02 | 1987-07-03 | Total Petroles | Separateur tournant a vortex pour liquide heterogene. |
US5131544A (en) * | 1988-09-13 | 1992-07-21 | E. Et M. Lamort | Device for selectively separating particles in a liquid, in particular for cleaning fibrous paper suspensing |
FR2919206A1 (fr) | 2007-07-27 | 2009-01-30 | Total Sa | Separateur a ecoulement cyclonique |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120248035A1 (en) * | 2009-12-18 | 2012-10-04 | Total Sa | Cyclonic flow separator |
US8950590B2 (en) * | 2009-12-18 | 2015-02-10 | Total Sa | Cyclonic flow separator |
Also Published As
Publication number | Publication date |
---|---|
NO20120670A1 (no) | 2012-09-04 |
US8950590B2 (en) | 2015-02-10 |
BR112012014983A2 (pt) | 2016-04-05 |
NO339749B1 (no) | 2017-01-30 |
US20120248035A1 (en) | 2012-10-04 |
FR2954187A1 (fr) | 2011-06-24 |
FR2954187B1 (fr) | 2014-08-01 |
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